Complimentary Probability

If the probability that tomorrow will be a sunny day is 0.78, find the probability that tomorrow will not be sunny.

• 0.12

• 0.22

• 0.39

• 0.78

Determine the complementary event A':

A die is rolled. Event A is: 'the number that appears is less than 5'

• A' is: the number that appears is a 5 or a 6

• A' is: the number that appears is a 5

• A' is: the number that appears is a 6

• A' is: the number that appears is greater than a 5

Determine the complementary event A': A die is rolled. Event A is: 'the number that appears is greater than 2'

• A' is: the number that appears is a 2, 3, 4, 5 or 6

• A' is: the number that appears is 1 or 2

• A' is: the number that appears is a 1

• A' is: the number that appears is a 2

Determine the complementary event A': A die is rolled. Event A is: 'the number that appears is even'

• A' is: the number that appears is a 1, 2, 4 or 6

• A' is: the number that appears is a 6

• A' is: the number that appears is a 2 or a 4

• A' is: the number that appears is odd

P(not A) = *Remember to simplify.*

• 6/8

• 3/4

• 2/8

• 1/4

The sum of the probabilities of ______ is 1.

• Independent Events

• Simple Events

• Complementary Events

• Experimental Events

Complimentary probability means ONE WHOLE. The probability of rolling a 5 or 6 on one di and the probability of rolling a 1,2,3 or 4 on another di. (circle one)

• complementary

• not complementary

The probability of an event NOT occurring.

• Probability

• Sample Space

• Liklihood

• Complement